德國HYDAC壓力閥簡單介紹，0180 S 125 W

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are accumulated in critical areas.

8. NOMINAL TENSION AND VOLTAGE

In solenoid valves coils are used 

which are designed to operate safely 

in the voltage range of +/- 15% of 

nominal voltage at max. 60 ° ambient 

temperature. The combination of steady 

surge and very hot temperatures can 

z FPM: from -20°C to +80°C 

(sometimes up to +100°C)

There are also deep temperature valves 

(TT), where the seals are specially 

designed for low temperatures.

Other influences of temperature:

z NBR: from -30°C to +100°C 

immediate failure of the parts in the 

hydraulic system when these particles 

z brittle fracture of steel at low 

temperatures

z relaxation of springs made of spring 

steel at higher temperatures

z fusing of coils at continous operation 

under high current and at high 

temperatures

of a hydraulic system. Exceeding the 

specified particle size in the filtration 

classes 21/19/16 to 18/16/13 may cause 

(solenoid valves - 20°C)

z FPM: from -20°C to +120°C 

(all other influences see point 4)

6. VISCOSITY

HYDAC valves may be used generally 

only in specific viscosity ranges, as in 

too thin or thick liquids, the assured 

features can not be fulfilled. These 

viscosities are also different for the 

different valves, but in average in the 

range of 10 mm2 /s to 420 mm2/ s.

7. CONTAMINATION LEVEL 

(FILTRATION)

Filtration and the associated particle size 

of contaminants in the hydraulic oil is 

the most important point in the operation 

result in extreme cases to failure of the 

solenoid. Therefore always a good heat 

dissipation and voltage level has to be 

Like the ambient temperature the media 

temp. range has a direct effect on the 

HYDAC direct acting pressure relief valves are spring-loaded cone- 

or ball-type poppet valves which limit the pressure in hydraulic systems out of safety reasons.

(solenoid valves - 20°C)

 A leakage-free securing of consumers and systems is enabled. 

Different pressure ranges enable an optimum system adjustment. 

The direct acting pressure relief valve DB06A is a leakage-free poppet

 valve used for limiting the inlet pressure by opening the outlet

 against spring force. Cavity UNF 9/16-18. Qmax = 15 l/min Pmax = 350 bar 

z NBR: from -30°C to +60°C 

used materials in the valve, e.g. their 

mech. strength. Generally, the maximum 

temperature depends primarily on the 

sealing materials. HYDAC defines here:

德國HYDAC壓力閥簡單介紹，0180 S 125 W